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LV standard motors

This guide provides basic information about IEC low voltage motors. In this context, low voltage refers to motors that operate at voltages less than 1 000 V and produce a maximum power of 1000 kW.

IEC Low Voltage Motors Guide by ABB (Basic technical information about low voltage standard motors)
IEC Low Voltage Motors Guide by ABB (Basic technical information about low voltage standard motors)

IEC low voltage motor ranges

In this overview, motors are classified primarily according to their fundamental physical differences, and secondarily, according to their purpose of use.

Accordingly, we divide motors into two ranges of induction motors, four types of motors for explosive atmospheres, frequency controlled motors, most notable of which are synchronous motors, and special application motors.

The last category of motors include, for example, marine motors, brake motors, and smoke extraction motors, which are based on the basic induction motor but have modifications that vary according to the purpose of use. Their features are not further described here.

Electric motors (photo credit: ABB)
Electric motors (photo credit: ABB)

Energy efficiency standards

The International Electrotechnical Commission (IEC) has introduced standards relating to energy efficient motors.

IEC 60034-2-1 specifies rules concerning efficiency testing methods and IEC 60034-30 defines efficiency classes for a wide range of electric motors connected direct on line.

IEC 60034-30-1 (which becomes valid in 2014) takes a step further in widening the scope of motors subject to efficiency classes and introduces the IE4 class. VSD-driven motors are out of the scope of this standard and will be dealt with in a standard of its own.

Title:Low Voltage Motors – Motor Guide – ABB
Size:1.98 MB
Download:Right here | Video Courses | Membership | Download Updates
Low Voltage Motors - Motor Guide - ABB
Low Voltage Motors – Motor Guide – ABB

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  1. Shazli Asad Siddiq
    Nov 21, 2023

    Respected Sir,

    I need the complete detailed guide book related to the motor calculation, efficiencies and audit purposes.

    Kindly provide me handbook regarding these topics.


    Shazli Asad
    Executive Engineer Utilities

  2. Mohamed Akram Khan
    Nov 08, 2021

    Please let me know the IEC standard which stipulates the minimum kW of a motor for 3.3 kV voltage. Also, please let me know the minimum kW.

    Thank you.

  3. Mohamed
    Nov 12, 2020

    Really fruitfully topic,,,,God bless

  4. Nasreldin
    May 03, 2016

    thanks for your supporting me advance Elctrical books

  5. Edgar Monterroso
    Dec 02, 2014

    Thanks for your help, always lear new knowledges, thanks for free dowload, awesome the material.

  6. Yasir Abdelgadir Hussein
    Dec 01, 2014


  7. Shehab
    Nov 30, 2014

    This website is awesome! Please keep it free!

    • Edvard
      Nov 30, 2014

      Thank you Shehab! It will be free always ;)

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